math - You need to choose between two phone plans for local calls. Plan A ...
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statistics - In a local cellular phone area, company A accounts for 70% of the ...
algebra - The equation C=mx+b can be used to model the monthly cost, C, of a ...
math - your cellular phone plan costs $11 per month plus $.12 per minute of ...
Algebra - the phone company has two plans for cell phones. the first plan calls ...
Math - Global Telephone charges 30 dollars for monthly phone service, plus a ...
Math - the international links long-distance phone company charges no monthly ...
Pre Algebra - A phone company charges $27.95 monthly fee and .12/min. for local ...